Draft-rigging for railway-cars



I. F. UCONNOR.

DRAFT RIGGING FOR RAILWAY CARS.

APPLICATION FILED JULY 5, I9I9. 1,369,536. Patented Feb. v22, 1921.

UNITED *STATES'PATENT OFFICE@- 'i JOHN r. O'CONNOR, or CHICAGO, ILLINOIS, AssIefNoRY 'ro WILLIAIII'V It. .MIN-En, or

' cHAzY, NEW Yonx. r

D RAIFT-BIGGING FOR RAILWAY-CARS.

Specication of Letters' Patent. Patented Feb. 22, 1921.

Application `nlerl July 5, 1919. Serial No. 308,830.

To all whom t may concern: g, l

Be it known that I JOHN F. OCONNOR, a

` citizen of the United States,residing at Chicago, in the' county ofy Cook" and State of Illinois, have invented al certain new and useful Improvement in Draft-Rigging for Railway-Cars, of which the following" is a full, clear, concise, and exact description, reference being had -to lthe. 'accompanying drawings, forming a' part of this specification.

My' invention relates to improvements inv A draft rigging for railroad cars.

The object of my invention is to provide an efficient friction spring draft gear for railroad cars.

In rthe drawings forming a part ofwthis section of the rear portion ofthe shellV employed-in the construction shown'. Fig. 4

is a perspective view of the spring case compressing member.v Fig; 5 is aperspective Y view of one-of the spring eases employed.

Referring to the drawings, the draft members', in this instance the center sills 10, are

provided upon theirf inner faces withjL the front stops 11 and the rear-stops 12. The draw bar 13 of whichuonly the. rear portion is shown, vis mounted between. the draft member having attachedr'thereto ai draft yoke 14 ofthe usual. construction and adapt-` ed to inclose within .it thedraft gear em bodying my inventiorn A front follower 15 is alsomounted within thek yoke,v the func'- y performed by the rear endlG of the-shell 1 The shell 17 comprises a 'longitudinally arranged hollow. member .18, and an integral!` hollow member 19 transversely arranged andopen at both its ends. The wholeA shell is in general conformation a; hO1low"T-shaped member.

followerv l15A and; within the: shelL aging the? friction. shoes;v aref. the:v springs. 2 com-- prising. an. outer,` coil, andant inner' coil, theA latter. being seated against the vcfajsher 23, engaging the shoulders' 24` of the'i shoes'.

Within the4 longitudinally' extending' portion ofthe shell: is mountedA the: frictionl shoes 20 provided with a centrally arranged.

e wedge: member 21, which engages the. front `seated against the forward face 124 of a spring'c'ase compressing member25 which .Y

ter the transverse' hollow portion of the A shell. Y Opposit'ely arranged therefrom in said transverseV hollow portion is a further lblock-like Ymember 28', similarly provided with inwardly extending inclined planes 29-29which are adapted to coperate with Y the member 25 in drawing the spring cases hereinafter described towardv each other. Thesaid spring cases each comprise a hollow member 31, closed at its outer end 32 and open at its inner end, each being pro-y vided at its inner` end with a pairof upper and lower planes 132 and 33 respectively,

leach pairY consisting of the convergingv V'planes 34-34. The forward planes 34 are adapted to be engaged by thetsurfaces 27 of the spring case compressing member 25'a'nd the rear planes 34are adapted to' be engaged by the surfaces 29f-29 of the member 28.

ment 35, consisting preferably ofthe outer coiled spring 36 and the innerr coiled spring 37. In normal position of the parts as illustrated in Fig. 1 ofthe drawing,V the two spring cases are spaced apart lat their inner open ends, their outer ends being adjacent the draft members 10. 'I he memberl 28 and. the spring case compressing member 25 are providedl adjacent the spring cases with the hollowed out portions 38 to permit their `travel vtoward each other without being impeded by the spring cases 31.

vFurther described, the spring case compressing member 25 and its opposed member" 28 are each provided with a wedge'- shaped recess, vertically 'arranged fwithin which the wedge-likeV members upon the inf ner ends `of the spring cases are received and are also provided with transverse recesses to.v permit their longitudinal movement in reference to the shell. The parts between the draft membersare supported by the tie plate iool V.Art tlefrean emitev springs are' 39; The `:spring case compressing member 110 n compression o andV its opposed member 28 from the foregoing description will be observed to have engagin faceswhich from the description of the evice hereinafter following 'will be seen to be frictional faces, the same being the inclined planes 27 on 'the spring case compressing member, the similar inclined planes 29 upon an opposed member 28 andv the inclined planes 3.4-34 front upon theY greater than that of those within the longi-V In such ar-v tudinal portion of the shell. rangement after a preliminary movement of the longitudinal springs 22, the, friction elements in the longitudinal opening of the shell will engageagainst the stem 26, vand upon the movement of the spring case compressing member 25 rearwardly, the spring casesv 31 are by reason of their engagement between `the front. compressing member 25 and rear compressing member 28, drawn or squeezedtoward each other against the resistance of the contained spring, this movcment being also resisted by the friction between the compressing elements 25 and 28 and the wedge-like members upon the spring cases. 'Ihe spring cases may be lso yspaced apart and the wedge-like openings` in the members 25 and 28. forming the planes 27--27 l'and 429-29 thereonrespectively so connected that upon full compression of the springs 36V and'37 the open ends of the spring cases will enga e each other to preventoverf thesprings. On `.forward movement of the draw-bar, the `wedge memberl 21 remains stationary against thefront follower 15,`the shellis drawn forwardly by the oke and the. action of the various parts wlthn the shell is the same as upon before described. .5.5

rearward movement of the draw-.bar hereinvI claim: vv 1. In a friction shock absorbin mechanism, the combination with a frict1on shell;

. of frictionelements coperable 'withA said shell; 'spring means for yieldingly resisting relativev movement between said shell and friction elements; anV abutment, movable with respect tothe shell, for thev end-of the spring means remote from the friction elements;-and combined friction and lspring means vfor yieldingly .resisting relative lmovement between said abutment and said shell, said combined friction and spring meansv including friction elements movable transversely of said friction shell.

2. In a friction shock absorbing mechanism, the combination with a casting having a longitudinally extending spring chamber vand a transversely extending chamber in communication with one end of said spring chamber, the casting being provided with interior friction surfaces atthe opposite end of said spring chamber; of ,friction elements coperable with said frictionsurfaces; spring means within said spring chamber'and compressiblel in a direction parallel to the axis thereof; andV combined friction and spring devices in said transverse chamber including,

an element forming a yieldable abutment for the inner end lof said spring means.- 3. In a friction shockY absorbing mechanism, the combination with a friction shell; of 4.friction elements coperable with said shell; spring means lfor yieldingly resisting relative movement Vbetween said shell and friction elements; an abutment, movable with respect to theshell, for the end of the spring. Vmeans' remote from the friction elements; combined `friction and f spring means for yieldingly resistingl Yrelative movement between said abutment and :said shell, said combined friction andxspring means including vfriction elements movable` transversely of said friction shell; andl a pressuie-transmittingv column interposed 'between said frictiony elements'and said-abutment and of a lesser length than the ,normal distance therebetweemfsaid column being l' adapted, after a predetermined movementvof the. friction elements relatively to 'theishell,

to transmit pressure directly between the friction elements and said abutment. 3 4.'.In a-friction'shock vabsorbing mechaelements coperable Ywith said shell; spring means within-said chamber adapted to yield-y ingly resist rre'lative movement between the friction elementsand v the shell; ank abutment for said spring means at the end of the spring chamber remote froml the friction elements, said abutment."being-movable relatively toy the shell; transverselyl compressible-spring means. on the opposite sideof `said abutment from that of the first named spring means andfriction wedge elements 'arranged to be actuated Vby said abutment. for compressing the ysaid transverselyV compressible spring means. f

5. In a friction shock absorbing mechanism, the combinationlwith acasting having a longitudinallyy extending chamber atone end andv a transversely'extending chamber at its other end, the 'two chambers being in communicationwith each other, said casting having interiorf-riotion surfaces at the outer nism, the combination withf'a friction shell l having a spring chambertherein; of friction end of the first named chamber; of friction said Wedge friction faces of the spring caps, 10 elements coperable With said surfaces; a one of said members providing a yielding longitudinally arrangedv spring Within said abutment for the inner end of said longitudilongitudinally extending chamber; a transnally arranged spring.

' versely arranged spring Within the trans- In Witness that I claim the foregoing I versely extending chamber; spring ca s for have hereunto subscribed my name this 14th 15 said transversely arran ed spring, sai caps day of June, 1919.

having friction Wedge aces; and oppositely Y disposed Wedging members coperable withl JOI-IN F. OCONNOR. 

